Simple record: UnionPay online payment

1. Download the DLL file of chinapay and decompress it to the bin directory. There are 4 files in total.

 

2. Reference chinapay_net.dll to the project.

3. Put the applied key to the website. In this example, put it in the root directory key Folder:

4. Add a class:

Using system; using system. text; using system. web; using chinapay_net; /// <summary> /// chinapay summary /// </Summary> public class chinapay {Private Static string _ merid = "808080 ******** *"; // merchant account Private Static string _ Action = "https://payment.ChinaPay.com/pay/TransGet"; Private Static string _ bgreturl = "http://www.XXX.com/Payment/ChinaPayBgRetUrl.aspx"; Private Static string _ pagereturl = "http://www.X Xx.com/payment/chinapaypagereturl.aspx "; string strurl = httpcontext. current. request. physicalapplicationpath; // <summary> // create a submission form /// </Summary> /// <Param name = "ordid"> order number, length: 11 </param> // <Param name = "amount"> payment amount, retain up to two valid numbers </param> // <returns> </returns> Public static string getchinapayform (string orderid, decimal amount, string privatevalue) {string curyid = "156"; string transdate = d Atetime. Now. tostring ("yyyymmdd"); string transtype = "0001"; stringbuilder sb = new stringbuilder (); If (orderid. length! = 11) {sb. append ("the order number must be 11 characters long");} else if (amount <= 0) {sb. append ("order amount must be greater than 0");} else {string ordid = orderid. substring (0, 4) + _ merid. substring (10, 5) + orderid. substring (4, 7); string transamt = "000000000000" + math. round (amount, 2, midpointrounding. awayfromzero ). tostring (). replace (". "," "); transamt = transamt. substring (transamt. length-12, 12); chinapay CP = new chinapay (); string chkvalue = CP. getsign (_ merid, ordid, transamt, curyid, transdate, transtype); sb. append ("<form action = \" "+ _ Action +" \ "method = \" Post \ ">"); sb. append ("<input type = \" Hidden \ "name = \" merid \ "value = \" "+ _ merid +" \ "/>"); sb. append ("<input type = \" Hidden \ "name = \" ordid \ "value = \" "+ ordid +" \ "/>"); sb. append ("<input type = \" Hidden \ "name = \" transamt \ "value = \" "+ transamt +" \ "/>"); sb. append ("<input type = \" Hidden \ "name = \" curyid \ "value = \" "+ curyid +" \ "/>"); sb. append ("<input type = \" Hidden \ "name = \" transdate \ "value = \" "+ transdate +" \ "/>"); sb. append ("<input type = \" Hidden \ "name = \" transtype \ "value = \" "+ transtype +" \ "/>"); sb. append ("<input type = \" hid \ "name = \" version \ "value = \" 20040916 \ "/>"); sb. append ("<input type = \" Hidden \ "name = \" bgreturl \ "value = \" "+ _ bgreturl +" \ "/>"); sb. append ("<input type = \" Hidden \ "name = \" pagereturl \ "value = \" "+ _ pagereturl +" \ "/>"); sb. append ("<input type = \" Hidden \ "name = \" Upload ID \ "value = \" \ ">"); sb. append ("<input type = \" Hidden \ "name = \" priv1 \ "value = \" "+ privatevalue +" \ ">"); sb. append ("<input type = \" Hidden \ "name = \" chkvalue \ "value = \" "+ chkvalue +" \ ">"); sb. append ("<input id = \" postdata \ "type = \" Submit \ "value = \" Post \ "style = \" display: none; \ "/>"); sb. append ("</form>"); sb. append ("<SCRIPT type = \" text/JavaScript \ "> document. getelementbyid (\ "postdata \"). click (); </SCRIPT> ");} return sb. tostring ();} Public String getsign (string merid, string ordid, string transamt, string curyid, string transdate, string transtype) {netpayclientclass NPC = new netpayclientclass (); string Path = strurl + "key \ merprk. key "; NPC. setmerkeyfile (PATH); string strchkvalue = ""; strchkvalue = NPC. sign (merid, ordid, transamt, curyid, transdate, transtype); Return strchkvalue. trim ();} Public String signdata (string merid, string signmsg) {netpayclientclass NPC = new netpayclientclass (); NPC. setmerkeyfile (strurl + "key \ merprk. key "); string strchkvaluedata =" "; strchkvaluedata = NPC. signdata (merid, signmsg); Return strchkvaluedata. trim ();} public bool getcheck (string merid, string ordid, string transamt, string curyid, string transdate, string transtype, string orderstatus, string checkvalue) {netpayclientclass NPC = new netpayclientclass (); NPC. setpubkeyfile (strurl + "key \ pgpubk. key "); string strflag =" "; bool bolflag = false; strflag = NPC. check (merid, ordid, transamt, curyid, transdate, transtype, orderstatus, checkvalue); If (strflag = "0") {bolflag = true;} return bolflag ;} public bool checkdata (string plaindata, string checkvalue) {netpayclientclass NPC = new netpayclientclass (); NPC. setpubkeyfile (strurl + "key \ pgpubk. key "); string strflagdata =" "; bool bolflagdata = false; strflagdata = NPC. checkdata (plaindata, checkvalue); If (strflagdata = "true") {bolflagdata = true;} return bolflagdata ;}}

5. Add the page. The background code is as follows:

Using system; public partial class payment_chinapaypost {private string orderid = requeststring ("orderid"); // required private decimal amount = requestdecimal ("amount "); // required private string privatevalue = requeststring ("privatevalue"); // optional parameter protected void page_load (Object sender, eventargs e) {string postdata = chinapay. getchinapayform (orderid, amount, privatevalue); responsewrite (postdata );}}

6. Receive the return value:

Using system; /// <summary> /// Brief description of chinapaymodel /// </Summary> public class chinapaymodel1 {/// <summary> // merchant ID /// </ summary> Public String merid {Get; set ;}//< summary> /// Order No. /// </Summary> Public String orderno {Get; set ;} /// <summary> /// Transaction date /// </Summary> Public String transdate {Get; set ;} /// <summary> /// amount /// </Summary> Public String amount {Get; set ;} /// <summary> // currency // </Summary> Public String currencycode {Get; set ;} /// <summary> /// type /// </Summary> Public String transtype {Get; set ;} /// <summary> /// status /// </Summary> Public String status {Get; set ;} /// <summary> /// signature /// </Summary> Public String checkvalue {Get; set ;} /// <summary> /// Payment Gateway number /// </Summary> Public String consumer ID {Get; set ;} /// <summary> /// private domain of the merchant /// </Summary> Public String priv1 {Get; Set ;}} public class chinapaymodel2 {// <summary> // merchant ID // </Summary> Public String merid {Get; set ;} /// <summary> /// Order No. /// </Summary> Public String orderno {Get; set ;} /// <summary> /// Transaction date /// </Summary> Public datetime transdate {Get; set ;} /// <summary> // transaction amount // </Summary> Public decimal amount {Get; Set ;}/// <summary> // currency, 156 is RMB /// </Summary> Public int currencycode {Get; Set ;}/// <summary> // type: 0001 is payment, 0002 /// </Summary> Public String transtype {Get; Set ;}/// <summary> // status: success and Failure // </Summary> Public bool status {Get; set ;} /// <summary> /// whether the signature is correct /// </Summary> Public bool checkvalue {Get; set ;} /// <summary> /// Payment Gateway number /// </Summary> Public String consumer ID {Get; set ;} /// <summary> /// private domain of the merchant /// </Summary> Public String priv1 {Get; Set ;}} public class chinapaymode {Public String requestform {Get; set;} Public String requestquerystring {Get; set;} public chinapaymodel1 model1 {Get; set;} public chinapaymodel2 model2 {Get; set ;}}

Public static chinapaymodel1 chinapaymodel1 () {func <string, string> request = requeststring; string merid = request ("merid"); string orderno = request ("orderno "); string transdate = request ("transdate"); string amount = request ("amount"); string currencycode = request ("currencycode"); string transtype = request ("transtype "); string status = request ("status"); string checkvalue = request ("checkvalue"); string Region ID = request ("Region ID"); string priv1 = request ("priv1 "); return new chinapaymodel1 () {merid = merid, orderno = orderno, transdate = transdate, amount = amount, currencycode = currencycode, transtype = transtype, status = status, checkvalue = checkvalue, required id = required ID, priv1 = priv1};} public static chinapaymodel2 chinapaymodel2 () {func <string, int> parseint = parseint; func <string, decimal> parsedecimal = pagebaseuser. parsedecimal; chinapaymodel1 model = chinapaymodel1 (); string orderno = ""; if (model. orderno. length = 16) {orderno = model. orderno. substring (0, 4) + model. orderno. substring (9, 7);} datetime dt = convert. todatetime ("1900-01-01"); If (model. transdate. length = 8) {datetime. tryparse (model. transdate. substring (0, 4) + "-" + model. transdate. substring (4, 2) + "-" + model. transdate. substring (6, 2), Out DT);} decimal amount = 0; If (model. amount. length = 12) {amount = parsedecimal (model. amount)/100;} bool checkvalue = new chinapay (). getcheck (model. merid, model. orderno, model. amount, model. currencycode, model. transdate, model. transtype, model. status, model. checkvalue); return New chinapaymodel2 () {merid = model. merid, orderno = orderno, transdate = DT, amount = amount, currencycode = parseint (model. currencycode), transtype = model. transtype, status = parseint (model. status) = 1001, checkvalue = checkvalue, Region ID = model. region ID, priv1 = model. priv1 };}
// The following three methods are used to process the request:
/// <Summary> /// request to convert to int type /// </Summary> /// <Param name = "queryname"> </param> /// <Param name = "defaultvalue"> </param> // <returns> </returns> Public static decimal requestdecimal (string queryname, decimal defaultvalue) {decimal value = defaultvalue; If (! String. isnullorempty (httpcontext. current. request [queryname]) {decimal. tryparse (httputility. htmldecode (httpcontext. current. request [queryname]. tostring (). trim (), out value);} return value ;} /// <summary> /// request to convert string /// </Summary> /// <Param name = "queryname"> </param> /// <Param name = "defaultvalue"> </param> // <returns> </returns> Public static string requeststring (string queryname, string DEFA Ultvalue) {string value = defaultvalue; If (! String. isnullorempty (httpcontext. current. request [queryname]) {value = httputility. htmldecode (httpcontext. current. request [queryname]. tostring (). trim ();} return value ;} /// <summary> /// request to convert to decimal type /// </Summary> /// <Param name = "queryname"> </param> /// <Param name = "defaultvalue"> </param> // <returns> </returns> Public static decimal requestdecimal (string queryname, decimal defaultvalue) {deci Mal value = defaultvalue; If (! String. isnullorempty (httpcontext. current. request [queryname]) {decimal. tryparse (httputility. htmldecode (httpcontext. current. request [queryname]. tostring (). trim (), out value);} return value ;}

　　 protected void Page_Load(object sender, EventArgs e)    {

Chinapaymodel1 model1 = commonhelper. chinapaymodel1 (); chinapaymodel2 model2 = commonhelper. chinapaymodel2 (); # view received data during region test string logmsg = jsonconvert. serializeobject (New chinapaymode () {requestform = request. form. tostring (), requestquerystring = request. querystring. tostring (), model1 = model1, model2 = model2}); // omitted # endregion if (model2.checkvalue & model2.status ){}

}

　　

Simple record: UnionPay online payment